LUCID Hybrid Down Alternative + Gel-Infused Memory Foam Mattress Topper - Full Dual layer mattress topper features two inches of soft down alternative fill and two inches of convoluted, gel-infused memory foam for customized comfort Adjust your level of softness and support by inverting the topper and/or alternating the smooth or convoluted side of the Removable gel memory foam layer Box-stitched construction of the down alternative layer ensures consistent loft and breathability Convoluted design and cooling gel material improve memory foam's airflow and temperature Removable 250 thread count cotton cover is machine washable and dryer safe; 3-year Warranty